Home / 917,985.40-1,376,979.18-286,902.52

Finding the Fourth Proportional to 917,985.40, 1,376,979.18 and 286,902.52

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Solution

The fourth proportional to 917,985.40, 1,376,979.18 and 286,902.52 is: 430,354.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,985.40 : 1,376,979.18 = 286,902.52 : x
  2. Step 2: Convert to fraction form
    917,985.40/1,376,979.18 = 286,902.52/x
  3. Step 3: Cross multiply
    917,985.40x = 1,376,979.18 × 286,902.52
  4. Step 4: Simplify right side
    917,985.40x = 395,058,796,729.53
  5. Step 5: Solve for x
    x = 395,058,796,729.53/917,985.40
  6. Step 6: Final answer
    x = 430,354.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.